ci: regenerate frontend api.ts and gate on OpenAPI spec drift (#438)

The backend-ci already exports the spec and gates on openapi.json
drift, but the generated frontend types (api.ts) could silently
diverge. This adds a 'Regenerate frontend client types' step and
updates the drift check to cover both openapi.json and api.ts.

Closes #434

Co-authored-by: temiport25 <temiport25@users.noreply.github.com>

Author: temiport25

.github/workflows/backend-ci.yml

@@ -86,10 +86,14 @@ jobs:
           NODE_ENV: development
         run: npm run spec:export
 
+      - name: Regenerate frontend client types
+        working-directory: app/frontend
+        run: pnpm generate:api
+
       - name: Check for Prisma schema without migration
         run: chmod +x app/backend/scripts/check-prisma-migration.sh && app/backend/scripts/check-prisma-migration.sh
 
       - name: Check for OpenAPI spec drift
         run: |
-          git diff --exit-code app/frontend/openapi.json || \
-            (echo "ERROR: openapi.json is out of date. Run 'npm run spec:export' in app/backend and commit app/frontend/openapi.json." && exit 1)
+          git diff --exit-code app/frontend/openapi.json app/frontend/src/lib/generated/api.ts || \
+            (echo "ERROR: openapi.json or api.ts is out of date. Run 'npm run spec:export' in app/backend, then 'pnpm generate:api' in app/frontend, and commit both files." && exit 1)